eldo_user

Setting Up An Analysis
Saving and Restarting AC Simulations
In the following example Eldo will perform AC, NOISE and TRAN analyses at time 0, time 5n,
and time 7n:
.AC DEC 10 1 1e9
.NOISE v(5) vin 70
.TRAN 1n 20n
.OP 5n 7n
If some .EXTRACT commands related to AC analyses are specified, extract information will be
returned for each AC analysis.
When the output is cou format, an extra file, _tac.cou is created that holds the results
of those AC simulations which are performed from within a transient simulation.
When the output is JWDB, a folder TRAN is created with several AC folders inside, for
example AC_1, AC_2.
Limitations:
• AC results performed from within a transient simulation will not be dumped in GWL
and PSF output files.
• If there is a .TEMP or a .STEP command in the input file, the .ext file which normally
gets created will not be created in this instance.
• Information related to .EXTRACT SWEEP will not be available.
• Monte Carlo (.MC) enabled if .MC ALL is specified, Worst-Case (.WC), or transientnoise
(.NOISETRAN) simulations are disabled.
Related Commands
• .AC in the Eldo Reference Manual
• .TRAN in the Eldo Reference Manual
• .NOISE in the Eldo Reference Manual
• .OP in the Eldo Reference Manual
• .OPTION NOACT0 in the Eldo Reference Manual
Related Topics
AC Analysis
Saving and Restarting AC Simulations
To restart an AC simulation, you need to have both of the following commands in your input
netlist:
Eldo® User's Manual, 15.3 227